Udari Premachandra | February 17, 2015

Rates of Reaction:

• The rate of a chemical reaction is the speed at which the reaction occurs (i.e. speed at which the reactants are used or products are produced)
• Rate can be measured by the:

1. Change in mass of reactants or products
2. Change in pH
3. Change in conductivity (ion production)
4. Change in color
5. Change in Temp
6. Production of a gas

Calculating Average Rate of Reaction:

• Average rate of reaction is the change in concentration in a given time period
• Mathematically:
  • Rate = ∆[C] / ∆t
  • Rate = [C]final – [C]initial / tfinal - tinitial
• [C] is concentration in mol/L and t is the time (in sec)
• Unit for rate is mol/L/s
• Rate is expressed in terms of the amount of a product produced or the amount a reaction is consumed
• Reactants are used and products produced based on their molar ratios

Homework:

1. Complete data table for lab on Thursday (qualitative and quantitative)
2. Read page 6.1 and take notes
3. Do questions #2, 5, 6, 8 on pg. 360
4. Complete activity 6.1 (do graph that is due Friday)
5. ISP work for (February 18) --> Read 6.2 and watch videos on Wiki

REMEMBER: ISP FEBRUARY 18!

Links to Other Resources: